Obesity remains a serious health problem and it is no secret that many people want to lose weight. Behavioral economists typically argue that “nudges” help individuals with various decisionmaking flaws to live longer, healthier, and better lives. In an article in the new issue of Regulation, Michael L. Marlow discusses how nudging by government differs from nudging by markets, and explains why market nudging is the more promising avenue for helping citizens to lose weight.

Armed with a computer model in 1935, one could probably have written the exact same story on California drought as appears today in the Washington Post some 80 years ago, prompted by the very similar outlier temperatures of 1934 and 2014.

Two long wars, chronic deficits, the financial crisis, the costly drug war, the growth of executive power under Presidents Bush and Obama, and the revelations about NSA abuses, have given rise to a growing libertarian movement in our country – with a greater focus on individual liberty and less government power. David Boaz’s newly released The Libertarian Mind is a comprehensive guide to the history, philosophy, and growth of the libertarian movement, with incisive analyses of today’s most pressing issues and policies.

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The UN Can’t Even Promote Health

When people ask if the United Nations can serve any useful role, I find myself mumbling that maybe it can do some good on issues with cross-border impact, such as aiding refugees and improving health care. However, I always add, the record has not been good even there.

Now even the UN is admitting that it is hard to demonstrate that it has done any good on health care despite spending billions of dollars collected largely from American and other Western taxpayers.

LONDON (AP) — In the last two decades, the world has spent more than $196 billion trying to save people from death and disease in poor countries.

But just what the world’s gotten for its money isn’t clear, according to two studies published Friday in the medical journal Lancet.

Millions of people are now protected against diseases like yellow fever, sleeping under anti-malaria bed nets and taking AIDS drugs. Much beyond that, it’s tough to gauge the effectiveness of pricey programs led by the United Nations and its partners, and in some cases, big spending may even be counterproductive, the studies say.

I’m thinking of changing my answer the next time I’m asked if the UN has any positive roles to a simple and emphatic “no.”